1220420144235 has 8 divisors (see below), whose sum is σ = 1952672230800. Its totient is φ = 650890743584.

The previous prime is 1220420144189. The next prime is 1220420144243. The reversal of 1220420144235 is 5324410240221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220420144235 - 2⁷ = 1220420144107 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40680671460 + ... + 40680671489.

It is an arithmetic number, because the mean of its divisors is an integer number (244084028850).

Almost surely, 2^{1220420144235} is an apocalyptic number.

1220420144235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1220420144235 is a deficient number, since it is larger than the sum of its proper divisors (732252086565).

1220420144235 is an equidigital number, since it uses as much as digits as its factorization.

1220420144235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81361342957.

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 1220420144235 its reverse (5324410240221), we get a palindrome (6544830384456).

The spelling of 1220420144235 in words is "one trillion, two hundred twenty billion, four hundred twenty million, one hundred forty-four thousand, two hundred thirty-five".